Saturday, April21, 2018 L-36.com


Marine Weather and Tides
DuPont, WA

Version 3.4
What's New / NOTES
3/3/2018 - There is a new GOES Satellite for the east coast that required rewriting that part of the code. Please report any issues.
6/25/2017 - NOAA is having a major issue that impact the 7 day forecast load times. Many users are reporting problems. The issue has been reported.
5/23/2017 - Worked with NOAA again to speed up the 7 day forecast load times. Thanks to them for being responsive.

Sunrise 6:07AMSunset 8:09PM Saturday April 21, 2018 12:34 AM PDT (07:34 UTC) Moonrise 9:48AMMoonset 12:33AM Illumination 34% Phase: Waxing Crescent; Moon at 6 days in cycle
NOTE: Some of the data on this page has not been verified and should be used with that in mind. It may and occasionally will, be wrong. The tide reports are by xtide and are NOT FOR NAVIGATION.
Marine Forecasts
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PZZ135 Puget Sound And Hood Canal- 849 Pm Pdt Fri Apr 20 2018
.small craft advisory in effect through Saturday morning...
Tonight..SW wind to 10 kt becoming S 15 to 25 kt after midnight. Wind waves 1 ft or less building to 2 to 4 ft after midnight. A slight chance of rain in the evening then rain after midnight.
Sat..SW wind 15 to 25 kt easing to variable 5 to 15 kt in the afternoon. Wind waves 2 to 4 ft subsiding to 2 ft or less in the afternoon. A chance of showers.
Sat night..NW wind 5 to 15 kt in the evening becoming light. Wind waves 2 ft or less. A slight chance of showers in the evening.
Sun..Light wind becoming N to 10 kt in the afternoon. Wind waves 1 ft or less.
Sun night..N wind to 10 kt in the evening becoming light. Wind waves 1 ft or less.
Mon..Light wind. Wind waves less than 1 ft.
Mon night..N wind to 10 kt in the evening becoming light. Wind waves 1 ft or less.
Tue..Light wind becoming nw to 10 kt. Wind waves 1 ft or less.
Wed..Light wind becoming nw to 10 kt. Wind waves 1 ft or less.
PZZ100 849 Pm Pdt Fri Apr 20 2018
Synopsis for the northern and central washington coastal and inland waters..A cold front will move through western washington after midnight tonight, followed by a short period of strong onshore flow on Saturday morning. High pressure will build into the region over the weekend. Thermal low pressure will set up along the oregon coast Monday and Tuesday as an upper ridge shifts over the pacific northwest.

7 Day Forecast for Marine Location Near DuPont, WA
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location: 47.12, -122.67     debug


Area Discussion for - Seattle, WA
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Fxus66 ksew 210428
afdsew
area forecast discussion
national weather service seattle wa
928 pm pdt Fri apr 20 2018

Synopsis A cold front will move eastward across the area
overnight with decreasing showers behind the front Saturday. A
dry upper trough will cross the area Sunday. An upper level ridge
will build in Sunday night and remain over western washington
through most of next week for an extended dry and warm spell.

Short term A cold front will bring a quick shot of rain to
most of the area later tonight. Rain is already nearing the coast
right now and will move across the metro area between about 1-4
am.

Onshore flow behind the front will moisten the air mass, but
showers behind the front will mainly be confined to the mountains
Saturday. Moderate onshore flow will produce breezy to locally
windy conditions behind the cold front. A puget sound convergence
zone will slip southward from everett to seattle during Saturday
afternoon and early evening, accompanied by a few showers and a
localized band of stubborn clouds. Temps will be a few degrees
cooler compared to today but still close to normal.

Sunday is looking dry with decreasing clouds. A weak upper trough
will cross the area in the morning with an upper upper ridge
building in from the west later in the day. Highs will once again
be near normal. The upper ridge will move overhead on Monday for
dry and warmer weather. Haner

Long term From previous discussion: high pressure aloft will
produce mostly sunny and warm weather Tuesday through Thursday.

Highs will warm into the 70s many areas. Thursday will probably be
the warmest day
- possibly near 80 in spots with low level offshore flow. Onshore
flow is expected to develop Friday which should cool highs back
into the 60s. Some showers could also move into the area from the
south. Schneider

Aviation A quick-moving upper trough and surface cold front
will sweet eastward across western washington late tonight,
accompanied by a 1-2 hour bout of rain. It will be followed on
Saturday morning by onshore flow, which will bring plenty of cigs
in the 015-030 range in the hours around and after sunrise. Clouds
will scatter and lift in the afternoon, but a puget sound
convergence zone will from near everett early in the day and slip
south past seattle by late afternoon, bringing localized showers
and broken cigs.

Ksea... Cold frontal passage expected around 09z-11z, bringing
lower CIGS along with about 2 hours of rain. Could briefly be
heavy enough to reduce vsbys to 5-6sm. Early Sat morning,
expecting CIGS in the 020-030 range given onshore flow. CIGS will
lift in the afternoon. Then a pscz will slip down from the north,
bringing a few showers in the 22z-02z time frame, a thickening of
clouds, and a northerly wind shift around 00z-01z. Haner

Marine A cold front will sweep eastward across the waters late
tonight, followed on Saturday morning by a few hours of strong
onshore flow and westerly gales in the central eastern strait.

Seas along the coast will exceed 10 feet from late tonight into
Saturday afternoon.

High pressure will build into the area later Saturday and into
Sunday. A thermal trough will set up along the oregon coast Monday
and Tuesday, so we will see northerly breezes develop over
western washington Monday and Tuesday-- perhaps stronger than the
current forecast and better for afternoon sailing than the current
forecast indicates which only has north winds to 10 knots over
the inland waters for now.

Sew watches warnings advisories
Wa... None.

Pz... Small craft advisory until 6 pm pdt Saturday for admiralty inlet-
coastal waters from CAPE flattery to james island 10 to 60
nm-coastal waters from CAPE flattery to james island out 10
nm-coastal waters from james island to point grenville 10
to 60 nm-coastal waters from james island to point
grenville out 10 nm-coastal waters from point grenville to
cape shoalwater 10 to 60 nm-coastal waters from point
grenville to CAPE shoalwater out 10 nm-northern inland
waters including the san juan islands.

Small craft advisory for rough bar from 3 am to 6 pm pdt
Saturday for grays harbor bar.

Gale warning from 3 am to noon pdt Saturday for central u.S.

Waters strait of juan de fuca-east entrance u.S. Waters
strait of juan de fuca.

Small craft advisory until 3 pm pdt Saturday for west entrance
u.S. Waters strait of juan de fuca.

Small craft advisory until noon pdt Saturday for puget sound and
hood canal.



Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
46121 11 mi35 min 51°F 1021.4 hPa36°F
TCNW1 - 9446484 - Tacoma, WA 17 mi52 min 49°F1021.7 hPa
TCMW1 - 9446482 - Tacoma Met, WA 17 mi52 min SSE 1.9 G 5.1
EBSW1 - 9447130 - Seattle, WA 38 mi46 min SSE 6 G 8.9 48°F1021.3 hPa
WPOW1 - West Point, WA 39 mi34 min S 18 G 21 51°F 1020.8 hPa (-0.8)38°F
46120 47 mi43 min W 18 52°F 1020.1 hPa40°F

Wind History for Tacoma MET, WA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Fort Lewis / Gray U. S. Army Airfield, WA5 mi96 minSSW 510.00 miLight Rain52°F39°F62%1022.4 hPa
Tacoma / McChord Air Force Base, WA10 mi96 minW 510.00 miMostly Cloudy51°F41°F70%1022.8 hPa
Tacoma, Tacoma Narrows Airport, WA11 mi41 minSSW 610.00 miOvercast49°F34°F56%1021.7 hPa
Olympia, Olympia Airport, WA16 mi40 minWSW 410.00 miOvercast48°F37°F66%1022 hPa
Pierce County-Thun Field, WA20 mi39 minN 010.00 miOvercast50°F41°F71%1021.7 hPa

Wind History from GRF (wind in knots)
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Last 24hrSE4CalmSE4SE3SE3E3E3SE3E3CalmCalmW4S3SW9SW11W6W5W5NW5W4W5SE4SW5S6
1 day agoSE3CalmSE3CalmSE3SE5SE4SE3CalmNW4NE4NW4N3NW3W7W6W3W5CalmNW4W8W5SW4SE3
2 days agoCalmSE3CalmCalmCalmCalmCalmCalmCalmN3N5N6NW6NW6NW7NW10W8N3NE5S6NE3E4S3Calm

Tide / Current Tables for Dupont Wharf, Washington
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Dupont Wharf
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Sat -- 01:32 AM PDT     Moonset
Sat -- 04:31 AM PDT     6.69 feet Low Tide
Sat -- 06:11 AM PDT     Sunrise
Sat -- 09:22 AM PDT     12.05 feet High Tide
Sat -- 10:48 AM PDT     Moonrise
Sat -- 04:43 PM PDT     -1.01 feet Low Tide
Sat -- 08:08 PM PDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
1311.69.77.96.86.87.99.5111211.910.78.76.13.41-0.6-0.90.22.55.58.511.212.9

Tide / Current Tables for Nisqually Reach, Washington Current
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Nisqually Reach
Click for Map
Sat -- 01:32 AM PDT     Moonset
Sat -- 02:04 AM PDT     -0.94 knots Max Ebb
Sat -- 05:23 AM PDT     0.00 knots Slack
Sat -- 06:11 AM PDT     Sunrise
Sat -- 07:45 AM PDT     0.66 knots Max Flood
Sat -- 09:40 AM PDT     -0.01 knots Slack
Sat -- 10:48 AM PDT     Moonrise
Sat -- 01:43 PM PDT     -1.52 knots Max Ebb
Sat -- 05:18 PM PDT     0.01 knots Slack
Sat -- 08:08 PM PDT     Sunset
Sat -- 08:33 PM PDT     1.36 knots Max Flood
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
-0.5-0.8-0.9-0.8-0.6-0.20.20.60.60.3-0.2-0.7-1.2-1.5-1.5-1.3-0.8-0.20.40.91.31.310.5

Weather Map and Satellite Images
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wmap_P
GOES Local Image of PacificNorthwest    EDIT
NOTE: East coast views moved to GEOS-16. They are experimental and not well supported by NOAA so they may not be correct so be warned. This change required redoing a large amount of the GOES code. If the image you are expecting is not showing, please let me know. You may need to use the EDIT function to update your location.
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Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for Seattle, WA (3,6,7,8)
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Ground Weather Radar Station Seattle/Tacoma, WA
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Disclaimer:
The information on this web site has not been checked for accuracy. It is for entertainment purposes only and should be independently verified before using for any other reason. There are five sources. 1) Documents and manuals from a variety of sources. These have not been checked for accuracy and in many cases have not even been read by anyone associated with L-36.com. I have no idea of they are useful or accurate, I leave that to the reader. 2) Articles others have written and submitted. If you have questions on these, please contact the author. 3) Articles that represent my personal opinions. These are intended to promote thought and for entertainment. These are not intended to be fact, they are my opinions. 4) Small programs that generate result presented on a web page. Like any computer program, these may and in some cases do have errors. Almost all of these also make simplifying assumptions so they are not totally accurate even if there are no errors. Please verify all results. 5) Weather information is from numerious of sources and is presented automatically. It is not checked for accuracy either by anyone at L-36.com or by the source which is typically the US Government. See the NOAA web site for their disclaimer. Finally, tide and current data on this site is from 2007 and 2008 data bases, which may contain even older data. Changes in harbors due to building or dredging change tides and currents and for that reason many of the locations presented are no longer supported by newer data bases. For example, there is very little tidal current data in newer data bases so current data is likely wrong to some extent. This data is NOT FOR NAVIGATION. See the XTide disclaimer for details. In addition, tide and current are influenced by storms, river flow, and other factors beyond the ability of any predictive program.